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4A. Important Safety Information 153
Important Safety Information
When Using Your Device Near Other Electronic Devices
Your wireless handheld portable device is a low power radio transmitter and receiver. When it is ON, it
receives and also sends out radio frequency (RF) signals.
Most modern electronic equipment is shielded from RF energy. However, certain electronic equipment may
not be shielded against the RF signals from your wireless device; therefore, use of your device must be
restricted in certain situations.
In addition, the computer portion of your device produces low levels of RF energy due to the generation of
digital timing pulses by its clock oscillator circuits. Your device has been equipped with internal shielding to
minimize stray emissions of RF energy. However, use of the computer functions of your device must be
restricted in certain situations.
Hearing Aids
Some digital wireless phones may interfere with some hearing aids. In the event of such interference, you
may want to consult your service provider, or call the customer service line to discuss alternatives.
For more regulatory information about hearing devices, see “FCC Hearing-Aid Compatibility (HAC)
Regulations for Wireless Devices.”
Electronic Devices in Vehicles
RF signals may affect improperly installed or inadequately shielded electronic systems in motor vehicles.
Check with the manufacturer or its representative regarding your vehicle. You should also consult the
manufacturer of any equipment that has been added to your vehicle.
Posted Facilities
Turn your device OFF where posted notices so require.
Turn Off Your Device Before Flying
Aircraft
FCC regulations prohibit using the transmitting and phone functions of your device while in the air. In
addition, most airline regulations prohibit the on-board use of portable PCs (and all other portable electronic
devices that could potentially emit stray RF energy), particularly during take-offs and landings, to prevent any
possible interference with the reception of signals by airborne electronic navigational devices.
Turn your device OFF before boarding an aircraft. Always request and obtain prior consent and approval of
an authorized airline representative before using your device aboard an aircraft. Always follow the
instructions of the airline representative whenever using your device aboard an aircraft, to prevent any
possible interference with airborne electronic equipment.